Aponte-Merced L, Navia J M, Gaffar A, Fine N
Institute of Dental Research, University of Alabama School of Dentistry, Birmingham 35294.
Arch Oral Biol. 1987;32(1):17-20. doi: 10.1016/0003-9969(87)90148-8.
Relative 45Ca-uptake in vivo was determined by etchings after dentifrice application between 18 and 22 days of age; uptake increased and the Ca and P that dissolved decreased with application time. The mechanism of 45Ca-uptake from the dentifrice may be due to either isotopic exchange or to the precipitation or crystal growth of calcium and phosphate.
在18至22日龄期间，在使用牙膏后通过蚀刻法测定体内相对45Ca摄取量；随着使用时间的增加，摄取量增加，溶解的钙和磷减少。牙膏中45Ca摄取的机制可能是由于同位素交换，或者是钙和磷酸盐的沉淀或晶体生长。
